Lotus IndyIn 1963 Lotus arrived at 'The Brickyard' with three cars: one for Clark, one for Gurney, and a spare. Chapman and Gurney had gone to Ford for an engine and a modified, aluminum-block Fairlane V8 was fitted. The Lotus 29 was a larger version of the Grand Prix 25. Power was 80bhp down on the Offenhauser fours (a magnificent engine, by any measure) but the Lotus was another example of Chapman 'building lightness', bettering the roadsters on the scales by as much as 450 pounds.